Phosphate ions are a major pollutant of water supplies.They can be removed by precipitation using solutions ofCa2+ ions because the Ksp of calciumphosphate is 2.0 x 10- 29.Suppose that 3.00 x 103 L of waste water containingphosphate ions at 2.2 x 10- 3M is treated by adding 120 moles of solid CaCl2 (whichdissolves completely). Assume that the increase of the solution volume is negligible.
a. What is the concentration of phosphate ions after treatment?
b. What mass of calcium phosphateprecipitates?